Multiple choice

Supersonic planes fly with

  1. speed less than the speed of sound

  2. the speed of sound

  3. speed greater than the speed of sound

  4. the speed of light

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Supersonic speed is defined as a rate of travel that exceeds the speed of sound in a given medium. When an aircraft travels faster than sound, it creates shock waves known as a sonic boom. This term is derived from the Latin words for 'above' and 'sound'.